Frequently asked questions and answers
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General questions
All subscriptions except Enterprise and API can be tested for 30 days free of charge. Simply create an account, start the test month and you can benefit from all additional features.
From marketing, to banking and finance, to healthcare, we have the right specialist for every domain and subject area. Feel free to browse our references.
We are happy to help – whether for projects, feedback, dream jobs or a non-binding demo. You can reach us using the contact form or at hello@supertext.com.
The all-in-one solution for your multilingual communications: the basis is our AI translator, which can be trained to meet customer-specific requirements and which you can supplement with a professional Verification at the push of a button if required. Our API makes it easy to integrate Supertext into all of your programs and apps.
In addition, we offer a full range of ISO-certified service solutions: specialised translation, creative marketing localisation, copywriting and proofreading for multilingual documents, websites, apps, online stores and multimedia campaigns. All available through a central platform that puts you in control.
AI translation
With customisation, you can tailor the AI model precisely to your voice. It learns your corporate language based on style guides, glossaries, specific domains and previous translations. This allows it to automatically incorporate your style, formatting, sentence structures and specific terms into the translations. Thanks to continuous training using previous professional translations, the results become ever more accurate. Read more about it here.
Compare the different models and choose the right one for you based on your language needs, usage intensity and goals.
The starting point is our in-house translation-oriented LLM, which delivers results that are verifiably better than DeepL.
You can achieve even better translation quality with one of our tailored enterprise systems. This is then adapted to your specific needs with every professionally verified translation, keeping it always up-to-date and ensuring that your entire company speaks with one voice.
Sounds interesting? Then we should talk.
Simply put: through repetition. Our LLM is trained in stages. For pre-training, we access billions of documents and use them to train language models specifically geared to translation. Subsequent customisation occurs as the model learns to adapt translations based on style guides and terminology lists, as well as information on corporate language, locale and tone of voice.
In contrast to NMT-based models, LLMs can be adapted in near real-time with this approach. Terminology can be updated immediately and automatically flow into the next translation.
Are you interested in a tailored AI translation solution? Then we should talk.
The standard version is trained on a wide range of data. This allows the model to understand and process all kinds of non-specialist texts. To customise the model to your style and wording, it requires the company-specific texts – glossaries and style guides in the light version, and your existing professional translations in the fully customised version.
For AI translations, we currently allow files of up to a maximum of 1 million characters in the source language. The file formats and sizes allowed depend on your subscription. For all the details, please see our subscription overview.
Our AI translator and Supertext API speak 28 languages – are constantly learning more.
| Languages | Language variants |
|---|---|
| Albanian, Bulgarian, Chinese, Croatian, Czech, Danish, Dutch, English, Finnish, French, German, Greek, Hungarian, Italian, Japanese, Korean, Norwegian, Polish, Portuguese, Romansh, Russian, Serbian, Slovak, Slovenian, Spanish, Swedish, Swiss German, Turkish | Chinese (traditional, simplified), English (GB, US), French (CH, FR), German (AT, CH, DE), Italian (CH, IT), Portuguese (BR, PT), Serbian (Cyrillic, Latin), Swiss German (BE, ZH) |
For professional services, we offer more than 100 languages. You can find the current selection on the order page. And if your desired language is not on the list, we can always talk.
AI translator
Our online translator can handle various text formats, depending on your subscription. Disclaimer: Verification is currently only designed for text entered directly into the online translation interface.
| Supertext Free | From Essential | |
|---|---|---|
| Microsoft Word (docx, doc, docm, dotm, dotx, rtf, dot) | ✓ | ✓ |
| Microsoft PowerPoint (pptx, ppt, pptm, potx, ppsm, ppsx) | ✓ | ✓ |
| Microsoft Excel (xlsx, xls, xlsm, xltm, xltx, xlt, xlsb) | ✓ | |
| ✓ | ||
| SRT (video subtitles) | ✓ |
Supertext API
The API lets you translate tagged text or entire documents:
| HTML, XML | Office documents (.docx, .xls, .pptx) |
| PDFs | Subtitles (.srt) |
| Plain text (.txt) |
Verification and services
Yes, provided you create a free Supertext account. This not only allows you to benefit from higher usage limits for AI translation, but also gives you access to all your past Verification orders via your profile.
Currently, we offer these six language combinations:
| Source language | Target languages |
|---|
| English | French, German, Italian | | French | English, German, Italian | | German | English, French, Italian | | Italian | English, French, German |
However, we are constantly expanding our range of products and services. Please contact us if you regularly require services in a particular language. In the meantime, our specialised translation service will be happy to help you with all other language combinations.
Of course. Verification is billed individually for each order, regardless of whether you have a subscription for AI translation or not.
With customisation, you can tailor the AI model precisely to your voice. It learns your corporate language based on style guides, glossaries, specific domains and previous translations. This allows it to automatically incorporate your style, formatting, sentence structures and specific terms into the translations. Thanks to continuous training using previous professional translations, the results become ever more accurate. Read more about it here.
Verification is a fast and cost-effective solution that focuses on the accuracy of both content and language. With each order, we ensure that ...
... the content of the translation is complete and all information is conveyed correctly;
... the text is 100% understandable;
... spelling, grammar, sentence structure and punctuation are correct;
... the formatting of numbers, dates, etc. is consistent within the text.
On the other hand, the service does not (for the time being) include...
... stylistic improvements (e.g. puns, metaphors, etc.);
... taking into account company-specific terminology and (style) specifications;
... a correction by a second specialist.
The service is therefore intended for texts that simply need to be 100% understandable and correct. For subject-specific or creative texts, we recommend our more comprehensive specialised translation services.
Verification is designed for text entered directly into the online translation interface, up to a maximum of 3,000 characters (in the source language). For longer texts or documents, please contact our specialised translation service – where turnaround times start at six hours.
One of our experienced professional translators. They are all native speakers of their target language, have a university degree in translation and/or at least five years of professional experience, and undergo rigorous internal testing. Please note that, due to the very short delivery time, we cannot guarantee that the same person will always work on your orders when you use the Verification service.
With just a few clicks – either in the AI translator in your browser or via Supertext’s API directly in third-party systems. With a Verification, one of our 3,000 experienced translators will give a translation the stamp of approval – in minutes instead of hours. Prices and delivery times are displayed directly in the system. Click here for the details.
A Verification is available in as little as 8 minutes, depending on the text. For larger orders for specialised translation, copywriting or editing, you can choose between express (6 hours), 24 hours, 48 hours, 3 days and 1 week.
That depends entirely on your needs and goals. AI translation is a simple, robust and fast solution. For important texts, add a Verification or order a specialised translation. Here, depending on your needs, you can choose between BASIC (general texts), PREMIUM(more demanding specialist texts) and CREATIVE (marketing texts).
Yes. Click here for an overview of our copywriting and editing services.
We work exclusively with language professionals with sector-specific experience, who are all native speakers of their target language and have been tested by Supertext. If you place orders on a regular basis, we try to use the same experts as much as possible. For large volumes, we are happy to put together dedicated language teams for you upon request. Let’s talk about it.
This depends on your source text – and what you want to achieve with it. The simplest way to obtain objectively error-free writing is to have a professional proofreader correct spelling and grammar. The two-phase proofreading service gives you twice the peace of mind thanks to a second specialist check. For texts that need to be stylistically appealing as well as accurate, choose editing, which checks for stylistic subtleties. The most comprehensive service is rewriting – here, a trained copywriter edits and optimises everything from the structure to the style.
For service orders, we can process these formats (as well as others on request):
| Microsoft Word (docx, doc, docm, dotm, dotx, dot) | Microsoft Excel (xlsx, xls, xlsm, xltm, xltx, xlt, xlsb) |
| Microsoft PowerPoint (pptx, ppt, pptm, potx, ppsm, ppsx, pptm) | Microsoft XPS |
| Microsoft Visio (vsdx, vssx, vstx, vsd, vdw, vss) | Microsoft Publisher (pub) |
| Adobe InDesign (indd, idml) | Adobe Illustrator (ai, ait, eps, fxg, svgz, svg) |
| Adobe FrameMaker 8 (mif) | Adobe InCopy CS4 (icml, icmt, incp, inct) |
| Adobe Photoshop (psd, png, jpg, tiff) | Android (strings.xml) |
| Configuration files | CSV |
| Google Ads (aea) | HTML (html, xhtml, xht) |
| Instapage (json) | iOS (strings, xliff) |
| Java (properties) | JSON (json, resjson) |
| Markdown | OpenOffice (odt, ott, ods, ots, odg, otg, odp, otp, rtf) |
| PO files (po, pot) | QuarkXPress (qxd, qxb, qwd, qxp, xdoc, xtg, tag) |
| Resx | SubRip (srt) |
| Text files (txt, csv) | TOML |
| Trados (return) package | Web video text tracks |
| XLIFF (xliff, xlf, xlz, sdlxliff) | XML (xml, tmx, tbx) |
| YAML (yml, yaml) | ZIP |
Profile, team and administration
In the Team tab of the cockpit.
In the Profile tab of the cockpit.
All major credit cards, payable in CHF or EUR. Business customers with regular orders can also settle all Supertext services in a single invoice. Simply submit a request via your profile settings.
Yes. Simply enter the desired person in the Profile tab of the cockpit under “Access rights”.
Customisation (glossaries, ...)
Of course – you can save a separate glossary for any desired language combination. Then all you need to do is activate the relevant glossary when translating, and it will be taken into account in the output.
You can create an unlimited number of glossaries for any desired language combination. Our professional services also allow users to upload separate glossaries on request.
Personal glossary After logging in, you can create and manage your own glossary directly in our AI translator. Simply create an entry with the term in the source language and the preferred translation and your selection will flow into every translation (whether in the browser, via API or with one of our plugins).
Team glossary As an admin, you can also create team glossaries in your cockpit’s Customisation Hub. These apply for all users in your team to ensure uniform corporate language across all channels.
Please note: the glossary function is available to all users with the Advance subscription or higher.
With a glossary, you decide how Supertext should translate individual words and phrases. We scan the source text for terms in the glossary and automatically replace any detected matches with the saved target translation – regardless of the context.
This is done specifically for the selected language pair and in real time. Your glossary has highest priority and overrides the automatically generated translation.
Subscriptions
It’s quick and easy – simply go to the Subscription tab in the cockpit.
Our subscriptions let you benefit from maximum data security thanks to end-to-end encryption and instant text deletion, higher translation volumes and useful features such as single sign-on and the glossary.
Click here for an overview of all features.
You can try every subscription free for 30 days and see for yourself what Supertext has to offer. And, of course, you can cancel your subscription at any time afterwards.
Security
All our systems meet the highest security standards and are hosted exclusively in Switzerland. Our text and translation processes are certified according to ISO 27001 – from single sign-on and two-factor authentication to a specially protected workflow for confidential documents. This makes us the partner of choice for many banks, public authorities and insurers.
Want to know more? Contact us.
Exclusively in Switzerland.
That depends on you: with each of our subscriptions, your source and target texts are always deleted immediately after the translation. Text entered by Supertext Free users (without a subscription) may be used further improve our language models.
In all cases, your translation data will always be transmitted in encrypted form and processed exclusively on the most secure Swiss servers.
You can find out more about the differences in detail on our subscription overview.
Yes, we are also happy to offer on-premise hosting for enterprise customers. Interested? Get in touch with us.
Yes, 100%. You can find an overview of the security features of AI translation on our subscription overview. For more detailed information, please consult our privacy policy or contact us.
Yes. Supertext is certified according to the following ISO standards:
– ISO 27001 (information security management system)
– ISO 9001 (quality management system)
– ISO 17100 and 18587 (translation, post-editing, localisation, terminology management)
Please take a look at our certificates.
Only the language professionals who actually need access to complete the order (on a need-to-know’ basis).
For highly sensitive content (e.g. investor notifications, highly confidential contracts, etc.), you can take our patented secure workflow one (big) step further:
– Choose between four confidentiality levels for each order – from “Public” to “Strictly confidential”.
- “Confidential” and “Strictly confidential” documents run via a protected VPN infrastructure with a secure terminal server – a virtual, temporary high-security room.
- Only verified translators who have undergone a security check work on the text, and their access rights are limited (e.g. no copy-paste functionality, no printing, no web access, fixed geographical location)
- Delivery takes place via secure server, without local storage or data export.
- After the project is completed, the entire environment is deleted. It is then set up anew for the next order.
Would you like to have your confidential content translated just as securely in the future? Let’s talk about it.
API
In our API documentation.
With our API, you can seamlessly integrate AI translation and automatic language recognition into your website and programs. The HTTP interface lets you translate in real time directly in your core systems – from CMS to PIM to TMS – and scale your workflows to suit your needs.
For all content (free text and files) from any third-party system that you want to translate securely and in line with brand requirements. There are a wide range of possible use cases:
– Automatically localise your e-commerce shop – Localise websites and apps in real time – Set up multilingual customer support – Improve internal and external communication – Have particularly important translations verified by professionals – Integrate translation as a feature into your own software – and many more.
Of course: the Supertext API runs via a separate monthly subscription. This can also be combined with our online translator subscriptions, if desired.
You can easily generate API keys in your cockpit. Simply log in, create and copy the keys, embed them in your desired software and off you go.
Our API’s monthly base fee is CHF/EUR 4.90. There are also usage-based costs of CHF/EUR 20 per million characters, which are also billed monthly. As an admin, you can track API usage, including current costs and translated characters, at any time in the cockpit.
Verifications via API are billed separately. You can check the exact price of every order in advance using the API.
In the cockpit, admins can view, copy, add a comment on, delete or add new API keys.
Once you have signed up for a subscription, it takes less than five minutes to get started:
- Create an API key in your cockpit
- Use the key to embed the API into the code of your website or program
- Specify usage limits and users if necessary
- Done. You can use our translation and language recognition capabilities directly in any system environment.
The API gives you automatic access all 28 languages offered by our AI translator. Currently, these are:
Languages
Albanian, Bulgarian, Chinese, Croatian, Czech, Danish, Dutch, English, Finnish, French, German, Greek, Hungarian, Italian, Japanese, Korean, Norwegian, Polish, Portuguese, Romansh, Russian, Serbian, Slovak, Slovenian, Spanish, Swedish, Swiss German, Turkish
Language variants
Chinese (traditional, simplified), English (GB, US), French (CH, FR), German (AT, CH, DE), Italian (CH, IT), Portuguese (BR, PT), Serbian (Cyrillic, Latin), Swiss German (BE, ZH)
You can choose between the following file formats:
- Tagged text (HTML, XML)
- Microsoft Office documents (.docx, .xlsx, .pptx)
- PDFs (with/without OCR)
- Subtitles (.srt)
- Plain text (.txt)
With the Supertext API, you can also have professional translators proofread important translations directly – in just a few minutes and from just CHF/EUR 5.70.
If necessary, you can inquire about the price of a Verification in advance. Billing depends on volume and is in addition to your API subscription.
You can find all the details in our API-Dokumentation under “Fused translation”.
An unlimited number – to maximise productivity and teamwork.
MCP
Supertext Translation MCP is based on the Model Context Protocol (MCP), an open standard introduced by Anthropic that provides a universal adapter between AI applications and external data sources through a standardised interface.
Our translation MCP server allows AI assistants to seamlessly access Supertext’s specialised language models while maintaining a consistent, secure communication protocol. That way, you can combine the strengths of multiple systems, receiving highest-quality translations from your (customised) Supertext system right inside the AI tools you’re using every day.
Access to our MCP server is granted to all Supertext users with an Advanced, Pro or Enterprise licence. Check out our subscriptions for more details.
That depends on your Supertext subscription level and the AI tool you want to connect Supertext to.
For teams on Supertext Advanced, each user connects the respective AI agent individually using OAuth 2.1. Head over to the cockpit to find our handy step-by-step instructions to connect the most common AI systems.
For organisations on Supertext Enterprise, admins can centrally connect and manage most external AI tools for their entire team. You can find detailed instructions in your cockpit.
Once installed, some AI systems require you to explicitly prompt them to “Translate using Supertext” or “@Supertext” to connect to our server; others will automatically route any translation request to Supertext.
Any system that allows MCP usage. Here’s an overview for the most common AI assistants (as of March 2026):
| Auth support | Enterprise-wide deployment | |
|---|---|---|
| MS Copilot | OAuth (user level) + API key (team level) | ✓ |
| ChatGPT | OAuth (user level) | |
| Claude | OAuth (user level) + API key (team level) | ✓ |
| LangDock | OAuth (user level) + API key (team level) | ✓ |
| Gemini |
Yes, the number of connections is not limited.
Any translation request sent via MCP is handled with the same enterprise-grade security standards we use across our systems. Supertext exclusively hosts its systems on secure Swiss servers, is ISO-certified for information security and 100% compliant with GDPR and FADP.
Please keep in mind that any third-party connection (through MCP or other means) potentially imposes additional vulnerabilities. Supertext is not responsible for the data handling of any third-party system you connect to our servers.
Plugins and integrations
You can use our Restful API to integrate Supertext into any program or app in your work environment. Simply subscribe to our API-Abo and off you go.
We also have existing plugins for all common systems – from CMS to TMS and PIM. You can find our current list below. Is your system not included? Then we would be happy to find a solution together. Get in touch with us.
| AI translation | Professional services | |----------|----------|----------| | Across | ✓ | | | Drupal (KI-Übersetzung / Services) | ✓ | ✓ | | memoQ | ✓ | | Microsoft Outlook (as add-in) | | | Microsoft PowerPoint (as add-in) | ✓ | | | Microsoft Word (as add-in) | ✓ | | | STAR Transit | ✓ | | Trados Studio | ✓ | | translate5 | | ✓ | | Wordbee | ✓ | | | XTM | | ✓ | | Adobe Commerce (Magento) | | ✓ | | Adobe Experience Manager AEM | | ✓ | | Akeneo | | | Amara | | ✓ | | Bureau Works | | ✓ | | Censhare | | | Confluence | | ✓ | | Contao | | ✓ | | Contentful | | | Contentserv | | ✓ | | ClickUp | | ✓ | | Coupa | | | Django CMS | | | GitHub | | ✓ | | Instapage | | ✓ | | Kentico | | ✓ | | Locize | | ✓ | | Lokalise | | ✓ | | Magnolia | | ✓ | | ns.publish | | ✓ | | ns.wow | | ✓ | | OneSky | | ✓ | | Pimcore | | ✓ | | Phrase | | ✓ | | REDAXO | | | SAP Ariba | | | SAP Commerce Cloud | | ✓ | | Smartling | | ✓ | | Sitecore | | ✓ | | Trados WorldServer | | | | Transifex | | ✓ | | TYPO3 | | | Wezen | | ✓ | | WordPress | |